Wednesday, July 12, 2017

4th coldest high temperature on record today (July 12) at Duluth, MN; 2nd coldest at International Falls. Windy, fog, drizzle, showers tonight; Still very cool Thursday; Warming up Friday-Saturday

/Issued 5:51 PM CDT, Wednesday, July 12, 2017/

Note:  Average highs in the Northland on July 12 are in the mid to upper 70s.


Greatest concentration of heavy rain inside the black outlined area on map -- Scattered pockets of heavier rainfall occurred here in northeast Minnesota and northwest Wisconsin early this morning.

Rainfall totals from around the Northland

Note:  Totals listed below are from Tuesday night-Wednesday morning, July 11-12, 2017

Baxter, MN 3 W:  2.08 in
Grantsburg, WI:  1.50 in
Sarona, WI:  1.33 in
Brainerd, MN:  1.29 in
Moose Lake, MN 2 SW:  1.09 in
South Range, WI 3 ENE:  0.75 in
Superior, WI 5 SE:  0.67 in
Danbury, WI:  0.66 in
Aurora, MN:  0.60 in
Gary New Duluth, MN 2 NW:  0.57 in
Hayward, WI:  0.55 in
Butternut, WI 3 N:  0.42 in
Wright, MN 3 E:  0.42 in
Isabella, MN 1 W:  0.41 in
Cook, MN:  0.40 in
Clam Lake, WI 3 W:  0.34 in
Phillips, WI:  4 SE:  0.34 in
Winter, WI 4 NW:  0.33 in
Minong, WI 7 WNW:  0.30 in
Duluth, MN 1 NNE:  0.29 in
Scanlon, MN:  0.29 in
Lester Park, MN 2 SW:  0.28 in
Glidden, WI:  0.24 in
Chisholm, MN:  0.23 in
Ashland, WI:  0.23 in
Siren, WI:  0.23 in
Kabetogama, MN 1 W:  0.23 in
Hurley, WI:  0.18 in
Lutsen, MN:  0.18 in
Duluth, MN (Airport)  0.17 in
Wrenshall, MN:  0.16 in
International Falls, MN:  0.16 in
Grand Marais, MN:  0.16 in
Northome, MN:  0.15 in
Hovland, MN:  0.12 in

Weather Tidbits:

*High temperature of 61 degrees today, July 12, 2017 at Duluth, Minnesota is good for 4th coldest high temperature on record for July 12 (Dating back to 1870) Coldest high temperature on record for July 12 is 52 degrees set in 1891.  See top 5 list below.

1:  52 degrees in 1891
2:  54 degrees in 1893
3:  55 degrees in 1986
4:  61 degrees in 2017
5:  62 degrees in 1991, 1913 and 1888

*High temperature of 61 degrees today, July 12, 2017 at International Falls, Minnesota is good for 2nd coldest high temperature on record for July 12 (Dating back to 1895)  Coldest high temperature on record for July 12 is 58 degrees set in 1986.  See top 5 list below.

1:  58 degrees in 1986
2:  61 degrees in 2017
3:  63 degrees in 1926
4:  66 degrees in 2007, 1987 and 1967
5:  67 degrees in 1993 and 1952

*7 days so far this summer (Since June 1st) at or above 80 degrees at the Duluth Airport.  By this time last year there had been 10 days at or above 80 degrees.  Note:  The average number of days at or above 80 during the summer (June 1-August 31) is 23 days.

*Today, July 12 is the first time since June 29 with a temperature cooler than 70 F at the Duluth Airport.

Weather Synopsis

Very cool temperatures over most of the Northland today with highs only in the 50s near Lake Superior and in far northeast Minnesota but it was a lot warmer in far southern portions of the area with highs today in the 70s to around 80 degrees from Hinckley and Siren, east to the Hayward Lakes area.  Skies were generally overcast today but there was some clearing at times in parts of far eastern Minnesota and northwest Wisconsin.  There was some fog and drizzle occurring near Lake Superior thanks to the humid flow off Lake Superior.  Scattered showers have also occurred today in parts of Northland.

Low pressure across north central Wisconsin late this afternoon will drop south/east through Thursday evening -- An inverted trough extending west of that low through the northern half of Minnesota will basically washout by Thursday.  An upper level low over the Manitoba Lakes region this afternoon will dig south/east into the Northland through Thursday before it moves into eastern Canada and away from our area Friday.

A chilly airmass will remain over the area into Thursday with the coolest temperatures found near Lake Superior where a brisk NE wind will continue tonight and Thursday morning, winds near the lake become more northerly during the day Thursday.  Areas of fog and drizzle near Lake Superior tonight with scattered rain showers possible over the rest of the area, a few rain showers are also possible Thursday under mostly cloudy or partly sunny skies.

Lows tonight in the mid 40s to low 50s; Highs Thursday in the 60s over western areas with 50s to around 60 elsewhere.  Early Friday morning has the potential to be a chilly one with lows possibly dipping into the 30s over interior portions of northeast Minnesota, lows over the rest of the area will range from the 40s to lower 50s.

Note:  Can't totally rule out a bit of patchy frost in the typical cold spots away from Lake Superior in northeast Minnesota between 3-6 AM Friday but this chance is quite low.

Will warm up Friday as winds turn to the southwest as high pressure shifts off to the east -- highs will be in the 70s (Near average for mid July)

A cold front moves through the Northland Saturday.  Warm air and moisture will build south of this boundary with highs over east central Minnesota and northwest Wisconsin in the 80s while dew points climb into the 60s.  Not as warm and certainly less humid north of this front over northern Minnesota with highs Saturday in the 70s.

Note:  The overall weather pattern through next week (July 21st) isn't favorable for any long lasting heat for our area -- There will likely be a couple days of warm and possibly muggy weather through next week, but these conditions likely won't last more than a day or two at a time before relief in the form of a lake wind and or cold front occurs.

Forecast for Duluth and Superior

.Tonight...  Breezy.  Fog and drizzle.  Showers possible.  Overcast.  Low 49 to 53.  Wind east to northeast at 10 to 20 mph with gusts to 30 mph.

.Thursday...  Considerable cloudiness.  Cool.  High 55 to 60.  Wind northeast at 10 to 20 mph.

.Friday...  Warmer.  Mostly sunny.  Highs in the 70s.  Wind southwest at 10 to 20 mph.

Normal temperatures for Thursday

High:  77
Low:   56

Sunrise Thursday:  5:28 AM CDT
Sunset Thursday:   9:00 PM CDT